I'm yet to see someone be confident in this way on anything more than a trivial program, and be right. Just way too many footguns. My personal memorable one wa

I'm yet to see someone be confident in this way on anything more than a trivial program, and be right. Just way too many footguns. My personal memorable one was bit shifting 32bit values by varying amounts, and our test vectors all failing after a compiler update, because some of the shifts were by 32. Undefined behaviour.